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The pins should be correct as I have checked them on the Evo 4 as mentioned earlier. I even tried my sensor on his car and it works fine. So it can't even be the sensor. It's strange how the sensor wire on the Evo 4 has about 8v to it when the ignition is on.

How I think the sensor works is that it has voltage to it and as the sensor turns it lowers/drops the voltage but I'm not 100% sure.

i know a hall sensor just has 12v, earth and a signal wire to work but I'm sure the magnetic speed sensors work differently?

could I do any damage to the ecu if I put a 5v feed to the signal wire to see if it would work?